Name: Sandy B. Ford River Twp, Michigan UP (Zone 4b) (Zone 4b-maybe 5a)
I don't think they're the same variety... I've grown Riesentraube in the past, and am growing them this year, and in the past there was no fusing whatsoever; they do grow in a bunch, but all individual tomatoes ... and have great flavor !
“Think occasionally of the suffering of which you spare yourself the sight." ~ Albert Schweitzer C/F temp conversion